:root{
  --bg1:#c9f2ff;
  --bg2:#f5fbff;

  --text:#13233a;

  --panel:#ffffffdd;
  --panelBorder:#ffffff;

  --good1:#e8fff1;
  --good2:#bfffd9;
  --goodBorder:#8ff0b8;

  --bad1:#fff0f0;
  --bad2:#ffd0d0;
  --badBorder:#ff9a9a;

  --shadow: 0 10px 25px rgba(0,0,0,0.12);
  --radius: 20px;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg2), var(--bg1));
  overflow:hidden;
  text-transform: uppercase;
}

.top{
  display:grid;
  grid-template-columns: 240px 1fr 240px;
  gap: 10px;
  padding: 12px 12px;
  align-items:center;
}

.badge{
  background: var(--panel);
  border: 3px solid var(--panelBorder);
  border-radius: 999px;
  padding: 10px 12px;
  box-shadow: var(--shadow);
  width: fit-content;
}

.badge-title{
  font-weight: 1000;
  letter-spacing: 0.6px;
}

.badge-sub{
  font-weight: 950;
  opacity: 0.85;
  margin-top: 2px;
  font-size: 13px;
}

.top-center{
  text-align:center;
}

.h1{
  font-size: 22px;
  font-weight: 1000;
  letter-spacing: 0.6px;
}

.h2{
  font-size: 14px;
  font-weight: 950;
  opacity: 0.82;
  margin-top: 4px;
}

.top-right{
  display:flex;
  justify-content:flex-end;
  gap: 10px;
}

.btn{
  border: 0;
  background: var(--panel);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 1000;
  cursor:pointer;
  box-shadow: var(--shadow);
  text-decoration:none;
  color: var(--text);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border: 3px solid var(--panelBorder);
}

.btn:active{
  transform: translateY(1px);
}

.btn-ghost{
  background: transparent;
  box-shadow: none;
  border: 3px solid #ffffffcc;
}

.btn-good{
  background: linear-gradient(180deg, var(--good1), var(--good2));
  border-color: var(--goodBorder);
}

.main{
  height: calc(100% - 72px);
  padding: 10px 12px 14px;
  display:flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

/* FONDO CON IMAGEN DE CLASE Y ANIMAL */
.bg-scene{
  position:absolute;
  inset: 0;
  background-image: url("./assets/fondo_clase.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.55;
  filter: saturate(1.05) contrast(1.02);
  pointer-events: none;
}

.bg-overlay{
  position:absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(245,251,255,0.30), rgba(201,242,255,0.55));
  pointer-events:none;
}

.bg-animal{
  position:absolute;
  left: -40px;
  bottom: 40px;
  width: 420px;
  height: 420px;
  background-image: url("./assets/animal.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: left bottom;
  opacity: 0.35;
  filter: drop-shadow(0 16px 26px rgba(0,0,0,0.12));
  pointer-events:none;
}

/* DECORACIÓN */
.decor{
  position:absolute;
  pointer-events:none;
}

.decor-cloud{
  width: 260px;
  height: 120px;
  background: #ffffffaa;
  border: 3px solid #ffffff;
  border-radius: 999px;
  box-shadow: var(--shadow);
  filter: blur(0.2px);
}

.cloud-1{
  top: 8px;
  left: -40px;
  opacity: 0.50;
}

.cloud-2{
  top: 18px;
  right: -60px;
  width: 300px;
  opacity: 0.42;
}

.decor-sticker{
  font-size: 34px;
  opacity: 0.72;
  animation: floaty 4.6s ease-in-out infinite;
}

.s1{ left: 18px; bottom: 220px; }
.s2{ right: 24px; bottom: 250px; animation-duration: 5.2s; }
.s3{ left: 60%; bottom: 210px; animation-duration: 4.0s; }

@keyframes floaty{
  0%{ transform: translateY(0px) rotate(0deg); }
  50%{ transform: translateY(-10px) rotate(6deg); }
  100%{ transform: translateY(0px) rotate(0deg); }
}

/* ZONAS */
.zones{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  flex: 1;
  min-height: 280px;
  position: relative;
  z-index: 1;
}

.zone{
  background: var(--panel);
  border: 3px solid var(--panelBorder);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
  overflow:hidden;
  display:flex;
  flex-direction: column;
  align-items:center;
  gap: 6px;
  backdrop-filter: blur(2px);
}

.zone-title{
  font-size: 20px;
  font-weight: 1000;
  letter-spacing: 0.8px;
}

.zone-big{
  font-size: 92px;
  line-height: 1;
  margin-top: 6px;
  text-shadow: 0 10px 18px rgba(0,0,0,0.10);
}

.zone-hint{
  font-weight: 950;
  opacity: 0.85;
  text-align:center;
}

.drop-area{
  margin-top: 10px;
  width: 100%;
  flex: 1;
  border-radius: 16px;
  border: 4px dashed rgba(0,0,0,0.18);
  background: rgba(255,255,255,0.65);
  display:flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content:center;
  gap: 10px;
  padding: 10px;
}

.zone-good{
  background: linear-gradient(180deg, var(--panel), var(--good1));
  border-color: var(--goodBorder);
}

.zone-good .drop-area{
  border-color: rgba(70, 220, 140, 0.55);
}

.zone-bad{
  background: linear-gradient(180deg, var(--panel), var(--bad1));
  border-color: var(--badBorder);
}

.zone-bad .drop-area{
  border-color: rgba(255, 120, 120, 0.55);
}

/* TARJETAS */
.cards-panel{
  background: var(--panel);
  border: 3px solid var(--panelBorder);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 10px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(2px);
}

.cards-title{
  font-weight: 1000;
  letter-spacing: 0.6px;
  margin-bottom: 8px;
  font-size: 16px;
}

.cards{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  max-height: 210px;
  overflow:auto;
  padding-right: 6px;
}

.cards::-webkit-scrollbar{ width: 10px; }
.cards::-webkit-scrollbar-thumb{
  background: rgba(0,0,0,0.15);
  border-radius: 999px;
}

.card{
  width: 190px;
  background: #ffffff;
  border: 3px solid #d8ecff;
  border-radius: 18px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.10);
  padding: 10px;
  cursor: grab;
  user-select:none;
  touch-action:none;
  position: relative;
}

.card:active{ cursor: grabbing; }

.card-emoji{
  font-size: 44px;
  text-align:center;
}

.card-text{
  text-align:center;
  font-weight: 1000;
  margin-top: 6px;
  font-size: 16px;
}

.card-mini{
  text-align:center;
  font-weight: 950;
  opacity: 0.78;
  margin-top: 2px;
  font-size: 12px;
}

.card.dragging{
  position: fixed;
  z-index: 9999;
  margin:0;
  box-shadow: 0 18px 40px rgba(0,0,0,0.22);
  transform: scale(1.03);
}

.card.locked{
  cursor: default;
  opacity: 0.98;
}

/* TOAST */
.toast{
  position:absolute;
  left: 50%;
  top: 86px;
  transform: translateX(-50%);
  background: #ffffffee;
  border: 3px solid #ffffff;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 1000;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events:none;
  transition: opacity 160ms ease;
  z-index: 2;
}

.toast.on{ opacity: 1; }
.toast.good{ background: linear-gradient(180deg, var(--good1), var(--good2)); border-color: var(--goodBorder); }
.toast.bad{ background: linear-gradient(180deg, var(--bad1), var(--bad2)); border-color: var(--badBorder); }

/* FIN */
.finish{
  position:absolute;
  inset:0;
  background: rgba(0,0,0,0.25);
  display:none;
  align-items:center;
  justify-content:center;
  padding: 12px;
  z-index: 3;
}

.finish.on{ display:flex; }

.finish-card{
  width: min(520px, 94vw);
  background:#ffffffee;
  border: 3px solid #ffffff;
  border-radius: 22px;
  box-shadow: 0 20px 55px rgba(0,0,0,0.20);
  padding: 16px;
  text-align:center;
}

.finish-title{
  font-size: 28px;
  font-weight: 1000;
}

.finish-text{
  margin-top: 6px;
  font-weight: 1000;
  opacity: 0.88;
}

.finish-actions{
  margin-top: 14px;
  display:flex;
  gap: 10px;
  justify-content:center;
  flex-wrap: wrap;
}

/* RESPONSIVE */
@media (max-width: 900px){
  .top{ grid-template-columns: 1fr; }
  .top-center{ text-align:left; }
  .top-right{ justify-content:flex-start; }
  .zones{ grid-template-columns: 1fr; }
  .card{ width: calc(50% - 5px); min-width: 160px; }
  .bg-animal{ width: 300px; height: 300px; opacity: 0.28; }
}